LANTHEUS HLDGS INC

Ticker: LNTH CUSIP: 516544103 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018

Shares 167,796 Value ($000) $2,668 Avg Close $19.50 Range $14.45 - $24.45

Q4 2017

Shares 183,995 Value ($000) $3,763 Avg Close $20.36 Range $17.15 - $24.10

Q3 2017

Shares 220,384 Value ($000) $3,923 Avg Close $17.58 Range $15.05 - $20.45

Q2 2017

Shares 222,080 Value ($000) $3,920 Avg Close $14.71 Range $10.65 - $17.85

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	167,796	$2,668	$19.50	$14.45 - $24.45
Q4 2017	183,995	$3,763	$20.36	$17.15 - $24.10
Q3 2017	220,384	$3,923	$17.58	$15.05 - $20.45
Q2 2017	222,080	$3,920	$14.71	$10.65 - $17.85